A numbered series of aphorisms, guidelines, and principles that provided the foundation of business philosophy in Ferengi culture. There are at least 285 of them.
Some examples of Rules of Acquisition include:
Rule of Acquisition #22: A wise man can hear profit in the wind
Rule of Acquisition #34: War is good for business
Rule of Acquisition #47: Don't trust a man wearing a better suit than your own
Rule of Acquisition #98: Every man has his price